444013780 has 48 divisors (see below), whose sum is σ = 1102389120. Its totient is φ = 146982528.

The previous prime is 444013711. The next prime is 444013799. The reversal of 444013780 is 87310444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50622 + ... + 58741.

It is an arithmetic number, because the mean of its divisors is an integer number (22966440).

Almost surely, 2^444013780 is an apocalyptic number.

It is an amenable number.

444013780 is an abundant number, since it is smaller than the sum of its proper divisors (658375340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

444013780 is a wasteful number, since it uses less digits than its factorization.

444013780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109408 (or 109406 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 444013780 is about 21071.6344880980. The cubic root of 444013780 is about 762.8962548472.

The spelling of 444013780 in words is "four hundred forty-four million, thirteen thousand, seven hundred eighty".